BCX52-TP Equivalent & Substitute Parts Reference

Part Overview

The BCX52-TP is a PNP Bipolar Junction Transistor (BJT) designed for surface mount applications. It features a 60 V collector-emitter breakdown voltage, 1 A maximum collector current, and 500 mW maximum power dissipation. The device is provided in a SOT-89 (TO-243AA) package, intended for interface and general purpose switching tasks. As an active product, substitute identification is crucial for design flexibility, inventory risk mitigation, and ensuring continuity in manufacturing in case of stock constraints or supply chain changes.

Key Parameters

Parameter	BCX52-TP
Transistor Type	PNP
Voltage - Collector Emitter Breakdown (Max)	60 V
Current - Collector (Ic) (Max)	1 A
Vce Saturation (Max) @ Ib, Ic	500mV @ 50mA, 500mA
Current - Collector Cutoff (Max) (ICBO)	100 nA
DC Current Gain (hFE) (Min) @ Ic, Vce	63 @ 150mA, 2V
Power - Max	500 mW
Frequency - Transition	50 MHz
Operating Temperature	-55°C ~ 150°C (TJ)
Mounting Type	Surface Mount
Package / Case	TO-243AA
Supplier Device Package	SOT-89

Substitute Part Grouping Explanation

Substitute devices are selected based strictly on matching the following parameters:

Transistor Type (PNP)
Maximum Collector-Emitter Breakdown Voltage
Maximum Collector Current
Saturation Voltage at specified test currents
Maximum Collector Cutoff Current (ICBO)
Minimum DC Current Gain (hFE) at specified test conditions
Maximum Power Dissipation
Transition Frequency
Operating Temperature range
Mounting Type (Surface Mount)
Package / Case compatibility

Only substitute parts meeting all these specified parameters are considered appropriate equivalents for the BCX52-TP.

Parameter Comparison

Parameter	BCX52-TP	2SB1122T-TD-E	BCX5116TA	BCX52-16,135
Transistor Type	PNP	PNP	PNP	PNP
Voltage - Collector Emitter Breakdown (Max)	60 V	50 V	45 V	60 V
Current - Collector (Ic) (Max)	1 A	1 A	1 A	1 A
Vce Saturation (Max) @ Ib, Ic	500mV @ 50mA, 500mA	500mV @ 50mA, 500mA	500mV @ 50mA, 500mA	500mV @ 50mA, 500mA
Current - Collector Cutoff (Max) (ICBO)	100 nA	100 nA	100 nA	100 nA
DC Current Gain (hFE) (Min)	63 @ 150mA, 2V	100 @ 100mA, 2V	100 @ 150mA, 2V	100 @ 150mA, 2V
Power - Max	500 mW	500 mW	1 W	1.3 W
Frequency - Transition	50 MHz	150 MHz	150 MHz	145 MHz
Operating Temperature	-55°C ~ 150°C (TJ)	150°C (TJ)	-65°C ~ 150°C (TJ)	150°C (TJ)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	TO-243AA	TO-243AA	TO-243AA	TO-243AA
Supplier Device Package	SOT-89	PCP	SOT-89-3	SOT-89
Product Status	Active	Obsolete	Active	Active
RoHS/REACH Status	REACH Unaffected	ROHS3 Compliant, REACH Unaffected	ROHS3 Compliant, REACH Unaffected	ROHS3 Compliant, REACH Unaffected

Engineering Selection Recommendations

BCX52-TP and the substitutes BCX52-16,135 and BCX5116TA are noted as active parts and compliant with ROHS3 and REACH requirements, supporting ongoing sourcing and design-in for new and existing products. The 2SB1122T-TD-E is obsolete and, despite compliance, should only be referenced if existing inventory suffices for the intended application. The substitute BCX52-16,135 offers the closest electrical and package match by voltage rating and package type.

Frequently Asked Questions (FAQ)

Q1: What are the essential criteria for substituting the BCX52-TP with another transistor?
The substitute must match the PNP transistor type, voltage, current, gain, saturation voltage, cutoff current, transition frequency, mounting and package specifications.

Q2: Can higher rated power or transition frequency devices replace the BCX52-TP?
Yes, substitutes may have higher maximum power dissipation or transition frequency provided all other critical parameters are matched.

Q3: Is package type critical for substitution?
Yes, all substitutes listed feature the TO-243AA case compatible with SOT-89 mounting, ensuring mechanical interchangeability.

Q4: Do substitutes require identical voltage and current ratings?
Substitute selection requires equal or greater ratings in voltage and current to ensure safe operation in the intended design context.

Q5: Are obsolete products acceptable as substitutes?
Obsolete products like 2SB1122T-TD-E can be used if sufficient inventory is available and lifecycle requirements are met; otherwise, active parts are preferred.

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